Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 

Rotorua Lakes Report Out

MEDIA RELEASE

Rotorua Lakes Report Out

15 May 2008

The health of Lake Okaro is improving and blue green algae levels are down, according to the latest report on Rotorua lakes water quality.

However boaties, fisherman and other lake users should still check and clean their equipment, as new weeds have been found in previously clean lakes.

The Rotorua Lakes Water Quality Report is produced annually by Environment Bay of Plenty. It analyses 12 lakes Okaro, Rotorua, Rotoehu, Rotoiti, Rotomahana, Rerewhakaaitu, Okareka, Tikitapu, Okataina, Tarawera, Rotoma and Rotokakahi.

Environment Bay of Plenty Scientist Matt Bloxham, one of the authors of the report, said overall the outlook was positive.

“The 2007 report was business as usual and there was both good and bad news in terms of lake quality. Algal blooms, or cyanobacteria blooms, were down on previous seasons. However we did find some new invasive weed in a couple of the lakes which is of concern,” said Mr Bloxham

The good news is that Lake Okaro’s water quality showed definite improvement and this was the third continuous season of good results for the lake. The positive outcome is a result of remediation works including the introduction of a wetland by farmer Shane Birchall and the use of treatment products to absorb phosphorous and nitrogen.

There were also improvements in the level of blue green algae in the worst affected lakes with only two public health warnings issued by the officer of medical health over the period from Spring to late autumn 2007. In previous years around four warnings per season had been issued.

Environment Bay of Plenty scientists were disappointed to find invasive weeds called hornwort and egeria in Lake Rotomahana. New weed was also found in Lake Okataina but it was just one plant which was eradicated immediately.

People using the lakes are reminded to check and clean their equipment every time they move between lakes to prevent the spread of aquatic weeds.

“The water quality of the lakes is something the whole community can work together to improve. I would therefore urge all boaties, fishermen and other users to pause before they leave one lake for another and check their equipment thoroughly for weed,” said Mr Bloxham.

Boaties are advised to look under the boat trailer, check the anchor and run their hands along the trailer to check for the smallest pieces of weed. It only takes a piece of weed the size of a fingernail to cause a problem in a pristine lake.

All the lakes were monitored in terms of their ecological health and Trophic Level Index, which takes into account the total nitrogen, total phosphorus, clarity and chlorophyll a in a lake. Nitrogen and phosphorus are essential plant nutrients. In large quantities they can encourage the growth of nuisance aquatic plants such as algal blooms.

Nine lakes exceeded the Trophic Level Index targets set by Environment Bay of Plenty. When a lake reaches this trigger level, Environment Bay of Plenty staff work with local communities to examine the causes and an action plan is drawn up, which addresses potential sources of contamination.

Lakes Okareka and Okaro have action plans while the plans for the other lakes are at a draft stage.

ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Not Easy: Gordon Campbell On The Greens’ Ongoing Problems

Hard to treat the Greens’ belated decision to stand a candidate in Ohariu as being anything other than a desperation move, by a party whose own leadership is evidently concerned about its chances of survival...

A few months ago, the Greens felt able to forego that role in Ohariu in order to help a beleaguered Labour Party get its candidate Greg O’Connor across the line, and knock Peter Dunne out of the parliamentary frame. More>>

 

Gordon Campbell: On DHB Deficits And Free Trade

Currently the world is looking on aghast at the Trump administration’s plans to slash Obamacare, mainly in order to finance massive tax changes that will deliver most of their gains to the wealthy. Lives will be lost in the trade-off. Millions of Americans stand to lose access to the healthcare they need... More>>

Greens' Response: Slum-Like Rentals Exposed In Renting Review

“...The grim findings of the review are a wakeup call about the true state of rentals in this country. Too many renters are festering in slum-like conditions under the thumb of landlords who have largely unchecked powers and ignore tenants’ complaints when it suits them.” More>>

ALSO:

Gordon Campbell: On The Life And Times Of Peter Dunne

The unkind might talk of sinking ships, others could be more reminded of a loaded revolver left on the desk by his Cabinet colleagues as they closed the door behind them, now that the polls in Ohariu had confirmed he was no longer of much use to National. More>>

ALSO:

Gordon Campbell: On Labour’s Campaign Launch

One of the key motifs of Ardern’s speech was her repeated use of the phrase – “Now, what?” Cleverly, that looks like being Labour’s response to National’s ‘steady as it goes’ warning against not putting the economic ‘gains’ at risk. More>>

ALSO:

Lyndon Hood: Social Welfare, Explained

Speaking as someone who has seen better times and nowadays mostly operates by being really annoying and humiliating to deal with, I have some fellow feeling with the current system, so I’ll take this chance to set a few things straight.. More>>

ALSO:

Deregistered: Independent Board Decision On Family First

The Board considers that Family First has a purpose to promote its own particular views about marriage and the traditional family that cannot be determined to be for the public benefit in a way previously accepted as charitable... More>>

ALSO:

Transport Policies: Nats' New $10.5bn Roads Of National Significance

National is committing to the next generation of Roads of National Significance, National Party Transport Spokesperson Simon Bridges says. More>>

ALSO:

 
 
 
 
 
 

LATEST HEADLINES

  • PARLIAMENT
  • POLITICS
  • REGIONAL
 
 

Featured InfoPages

Opening the Election